113208815 has 4 divisors (see below), whose sum is σ = 135850584. Its totient is φ = 90567048.

The previous prime is 113208811. The next prime is 113208833. The reversal of 113208815 is 518802311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 518802311 = 17 ⋅30517783.

It is a cyclic number.

It is not a de Polignac number, because 113208815 - 2² = 113208811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113208811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11320877 + ... + 11320886.

It is an arithmetic number, because the mean of its divisors is an integer number (33962646).

Almost surely, 2^113208815 is an apocalyptic number.

113208815 is a deficient number, since it is larger than the sum of its proper divisors (22641769).

113208815 is an equidigital number, since it uses as much as digits as its factorization.

113208815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22641768.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 113208815 is about 10639.9631108383. The cubic root of 113208815 is about 483.7564272572.

The spelling of 113208815 in words is "one hundred thirteen million, two hundred eight thousand, eight hundred fifteen".